Thread-controlling device for sewing-machines.



R. GJWOODWARD.

THREAT) CONTROLLING DEVICE FOR SEWING MAGHINES.. a APPLICATION rum) JUNII'25,19'04. "1 Q67,293. Patented July 15, 1913;-

u] QBEEBTSrSHEBT 1.

I ewj g Gamma;

"R. G.'WO0D WARD. THREAD CONTROLLING DEVICE FOR SEWING MACHINES. APPLICATION FILED mm; 25. 1904.

rammed July 15, 1913,

s sums-sans;

glaweuroz witness 3 SHEETS-SHEET 3.

R. G. WOODWARD. THREAD CONTROLLING DBVIGE FOR SEWING MACHINES.

APPLICATION FILED JUNE 26, 1904. I Patented July 15, 1913.

& M 0

UNITED sf'ras ATENT carton.

RUSS-EL G. woonWAR'n, or WAUKEGAN, ILLm'ois, Assreivr'on To NIoNsriioIA siiw- ING MACHINE COMPANY, oronioaeo, ILLINOIS, a oor rona'rion OE-ILLINOIS.

' To all whom it may concern:

Beitknown that I, RUs snL G. lVoonwARD, tl CltlZGli ofthe United States, residing at W aukegan, in the county of Lake, State of Illinois, have invented certainnew and use in which the needle thread loop is drawn to one sideto allow the passage t-herethrough ofa looper which lays its thread on the face of thefabricin position for the needle in its descent to pass through the looper loop.

The invention is herein shown as applied to an o-verseaming sewing machine, having stitch-forming devices, including a. threadcarrying needle, a spreader adapted to take a loop of needle thread and carry it to one side, into position Where a thread carrying looper will carry a loop of, its own thread therethrough, and up over the edge of the Whereby the character ofstitch may. be

fabric into position to be engaged by the needle in its next descent. By regulating .the thread-controlling devices on the various threads, stitches presenting different appearances may. be formed. I

The object of the present invention is to provide a convenient and ready mechanism on an overseaming machine of the, type referred to,for taking up and regulating the slack for both the needle and looper thread,

quickly changedfrom one in which the looper thread lies substantially only upon the upper surface of the fabric, while the needle thread lies upon the under surface ofthe fabric and is concatenated with the looper loop at the edge. of the fabric, to one in whichthe needle thread practically only passes vertically through a the: fabric, the

looperthread not only lying. on the upper' surface of the fabric, but being drawn around to cover the edge and lie upon the under surface thereof. I accomplish the result in the first instance by-loosening upon the needle thread, and tightening up on the 'l'ooper thread, While in the second instancethe needle thread slack is practically all THREAD-CONTROLLING DEVICE For; snitriireeiir'aonrivrs.

Specification of Letters Patent;

taken up, and the looper thread drawn by and sii'nultaneously operating on tlielooper thread, but ii'ieans' are provided whereby when the'fne'edle thread is to be left to lie v Pateiiteddulylfi,1913, Application filed June 25,1904. sci-mi m. 214,110. .i

on the under side of the fabric/fa minimum amount of'slack therein is taken up, while maximum amount of slack in. the looper thread is taken up, but when a maximum amount of slack 'in' the needle thread is taken up andthe stitch drawn tight-ya minimum amount of slack in the looper thread is taken up."

The invention consistsin thevarious inatters of construction and arrangement hereinafter described and referred to in the appended claims.

"lh e'invention isillustrate'd lll'tllC a'c coin panying drawings, in which' E igure 1 is a side elevation of so much of a sewing machine with my'invention' applied, as is'necessary to a complete understanding of the same; Fig, 2 is a perspective View, with parts of the machineomitted, illustrating the positionof the parts-when the needle thread lies on theunder surface of the fabric, and the looper thread only on the upper surface; Fig. '8 is a side view, showing the position of the; parts when the looper' thread is drawn around onto the under surface of the fabric; Fig. 4' representsa view of-the upper surface of the fabric with the stitches; the left hand portion showing the form of stitches when the parts are in the position shown in Fig; 2, and the right hand portion showin' the form of stitches when the parts are iii-the position shown in Fig. 3; Fig.5 is a similar view of the tinder side of the fabric; Fig; 6 is a detail perspective 'of the'brackct which carriesa portion'of thetake up mechanism, and upon which the shifting block slides; Fig. 7 is a detail perspective of the shifting block; Fig. 8 is a detail perspective of a portion of the needle lever, the stud andthe neck'gu'ide; 'and'Fig. 9 is a detail view of the three parts ofthe shifting block.

In these drawings, A represents the sewingmachine stan'dardg'B the'gooseneck; C

the needle lever; D the needle bar; a the needle; I) the looper; and c the spreader,

these parts operating in the usual manner.

E is the needle lever extension upon which is secured the plate (Z, having the pull as 13111 e and slack take up pin f, the lower threadbeing led from the spool. in a proper with the needle lever which arm vibrates on the swinging arm 0 between two thread guides formed in the bracket on the head of the machine. These )arts are of the usual construction. The thread is led from the pull-off between the tension disks H to an eyelet I on the head of the machine, and thence between tension disks'K onthe head of the machine. The thread passes from the tension K through stationary eyelets L and M on the head of the machine, and also through an eyelet N The thread is then led from the eyelet M to the needle. The swinging arm controls the slack in the nee: dle. thread between the tension K and the needle. This swinging arm 0 is pivoted to the needle lever, and is. made in sections, one of which is adjustable relative to the other. The arm carries the segment mwhich meshes with a similar gear segment it formed on a'plate' 0 embracing the needle lever stud D. The plate 0 carries a bracket or yoke I having an opening p in its outer at o as shown in Figs.

end through which passes a pivot screw into the needle lever stud.

Upon the nee'dl -lever stud slides the shifting block R, which has upon opposite "sides plates 1', oppositely beveled to ride upon the of the side plates 5 ofthe yoke Q, when the shifting block forth on the needle stud it will rock the yoke and the plate 0, and, therefore, also the take up arm 01501 the needle thread,

whereby the arm S, which carries at its lower'forward end the auxiliary-slack controlling finger t. The'sliifting block R is slotted at its lower end, as'at u, and fits-over the guiding rack T,'having teeth on its upper S111? 'face, this guiding rack being attached to the -needle Ileve'r, parallel with the needle lever stud. The shifting block R is slotted 7 and '9. A plate U is fixed within the slot. and 'is' normally spring pressed downward by a spring housed .within the shifting block, and bearing against the upper edge of said plate. I

lyoke Q,

oppositely inclined upper edges.

R is slid back and means for simultaneously c of the controlling devices The rack bar-extends through a slot-w in the plate U, and the upper edge of the slot 10 is adapted to engage the teeth in the rack T. The finger-piece V carried bythe plate U serves as a means for raising and lowering the plate.- back and forth,

the plate U is'pressed upwardly to release the wall of theslot w fromthe rack, and then by means of the friction surface 00 the block can be shoved in and out.

lnthe position of the parts shown in Fig. 2, the arm needle thread does not act to pull back on the needle thread," except sufiiciently to brin it about to the edge of the fabric,

O controlling the slack otthe while the slack of the looper thread is con-'- trolledby all the fingers f, 2', I0, Z and t, thus tightening the looper rests on the upper surface and along the thread, so that'it only Q .85

edge of the fabric, making the stitch shown i'n-the left hand portions of Figs. 4 and 5.]-

By shifting the block to the position shown in Fig. 3, the'arm S is swung forward,'so' that'in its movement the finger t will not engage the looper will give it more slack, while the needle thread controlling arm thread at all, and thus 0 will have more of a throw and tighten the needle, t-hread,.so

that, the needle thread will pull the looper thread around on the under side of the ;fabric, iving to the stitch the appearance shpiwn 111 the right hand half of. Figs. 4 an Various modifications and changes may be made without departing from the spirit of-my invention. Having I claim as 1.,In a machine for .making' irregular stitches, stitch-forming devices including a plurality of stitch-forming members, means for taking up the thread carried by the stitch forming members, including controlried by the stitch forming members, and

means for simultaneously changin g'the op-. erative posltion of the controlling devices to vary the appearance of the stitch; sub-' stan'tially as described. I

2. In a machine for making thread-carrying needle and. a thread-carryoop and looper.

, overed'ge stitches, stitch-forming devices including a means'fo'r taking up the needle threads including controlling deioo thus described my invention, what I new and'desire to secure by -Let- .t'ers Patent, 1s

ling devices operating upon the threads carvices vfor .the needle and looper threads, and

anging the ,operative position to vary the appearance stantially as described.-

.3. In a machine for of the? stitch; subforming overedge stitches, stitch-forming devices indluding a needle andalooper, a take-upacting on both the needle and -looper threads, means to sianenrzes 8 multaneously increase the .take'up act-ion =;on theupper-thread and reduce the take up a c tiongon the lower thread, and-means .to; operate-.said take up substantially as described. 1-4;. In a machine; for forming. ;o,\-'eredge -stitchesyst itch-forming devices inclu'dh'ig ,a

needle and a looper, a take-up, acting on both 'the needle'. and looper. .threads,v meansto, 51- multaneously lncrease thetake, up ationon 1 10 the upper thread and redncet-he take np action on the .lower thread,..and\meansto op-r eratesaid take-up, including a -vibrati ng part; snbstantiallyas described.

. -5.-In a sewing machine, a needle, means" 'for reciprocating the same,hcomplemental 'stitchetorming mechanismcooperating with 6.9111 ,a' sewing. .mz chine, .Qstitcli; j forming "mechanism, including a plurality of thread; catrying-devices, a threadcontrolling mechanism-cooperating with each of said thread carrying-devicesto take up the thread car- --"1:ied -thereby, and .means for Changing the j'efiect-iv'e, action of said contro1lingn1ecl1anism upon .each of the threads, where y the -appearance (of .the stitch. is changed; sub? stantially-as described. i ---7. Ina sewing machine; a vibrating lever for -operating .the needleand -a take-n1) mounted thereon and: ,.\"ibrati 11g witlr said 'lever and manually controlled,means for 40"shii'ting the operative position of said take: =up,- whereby the Lappearance oft-he ist-i Ch 25- atially as described.

"may be changech v 8. Inna sewing machine suit-able stitch forn'iing mechanism including a thread rarrying needle, aribrating lever-having an e x-' xitension for operating said llee(ll t l'l ll'tatl guides mounted on the same, having\ '.er--

tical and horizontal movements respeetivgely,

stationary thread guides 4 coiiperating \v-ith the movable thread guides to talge up said needle thread and means for simultaneously adjusting the position of said ,morable. guides.

. 9. In an adjustablestake-npfland pull-ofi device, movable thread-engaging members, .means for moving the same, thread guides carried by said members, stationary thread guides cooperating therewith, and means. to simultaneouslyadjust both 'mo,vable thread guides nearer to or farther from their cooperating stationary guides; substantially as described.

l0. In a sewing machine stitch forming n isn itfiluding means acting simultaneously. on the eedle thread totakeit-fup and on the looperithread to allow air additional suppl of; slack-guild fmeanstoadjfust vthe amount of a er nmtiefinsit-t e iecd th da i :l. In s in m h e, St i' ii s devices including a needle-fan d' ldopereach s rry sifl h ead th adcen i em' c m- .nism including means acting simultaneously o n-t-he needle. thread to take it uplandfon the 'loo'per thread totake itup, and means "to adjust the amount of takef pecueaon, the

,. loQper-thread. r.

5 12. sewing" machine, stitch forming devices includinga 1ieedleand lo o'per, each carrying ar tln'ez ddtlirea'd controlling tin-chanism ineluding meansiact-ing simultaneously onthe needle thread'td take imp" and'qn the looper thread "to'j-take' it np,-an'd means 'to adjust the amountofftak'e up actifoi i'oii the need e.and )Q1 r.t 1' 3,13 In: a sewing machine suitable stitch forming inechanisn'i, a \'il'ira t i1'1'g' 1)fart', t'hread guides attacheddhereto, stzi'tionary. cooperating thread guides, ,a 's,l':' ek controller and means for changing its operative 'iosi'tionfl 'to ehzinge-it he locking, points :of t lie; thi"eads.-F

means for si multaiie'ousllv f c'ln'mgin'g the operative 'positionof the thre'zul controll in'g devices; substantially "as describedl In 21in orerseainingfniachine', including a threadr carrying'needle, iind a thread-carrying" looper, "a. needle" thread" controlling arm, a looper thread controllingfarm,iconrectionsf li'et'ween the two? andmeans' for shifting.

arms -"siinidtancousl v. '\\l1ereb \""when the needle" d g-eta eanut-1111'; arm is "shiftedto take upfinofe of the needle thread Sl:1("l less ofthe sl'iiekof the-'loo 'mfthread is talten up; substantially as described; i v 1 61 Ira sew-iiig' 'naclri'ne, havingistitch f drming' :itecha'nisi'n including a tliread-c-a r-- rying needle and a tlii ez'ul-cal-ryiiigloopcr, hieansfoif controlling the sla'c'lt thereof. in-

said opei'atii1g.-part, and thereby changing 't1ieo'pei-at i've position of the slack-rontroh ling devices; substantially as described.

17. In a sewing machine having a stitchforming mechanism, includinga thread-carmeans tor controlling the. needle thread comprising a swinging arm. means for controlling-.- the looperthread, comprising a. take-updevice .o 'ieratedby a movingpart of the machine, an auxiliary device for'ai d d'ev-ices'includi1'1g a needle and loopcr each 65 [carrying athread, thread controlling mechanig "ihrati ng tlirea-d 'con'trollin'g devices; and

thepositioirfi the throw of the" el'tt lingwgn operating part, connections hecontrolling"devices, "and means-tor,shitting ryi-ng needle and a"thread-carr ving loopeu.

ing in the control of the looper thread, and? -need ei tljrread andfthelooper thread', includa, vibrating part adapted control the needle thread'cbntrolling arm and the auxlllfll'y looper thread controlling device, and

means .forishifting tlie'position of thevi- -I)rati ng part, and thereby the position-of the fro rit'rollers operated thereby; substantially is described.

'. toroek said take-up member andchange its I: may be 18. 111 a;-sewing -machine, havingstitch- 'zl'o'rmmg mechanism including a "thread-cary ln e le and 'a thread-carrying looper, means. for-.- co trolling the needle thread,

trolling the lgoper threa ,comprising a take-up. device operated by a moving part 0f the machine and cooperating with. sta

tionary members on themachine frame, a vibrating lever havlng engagement at one cnd'with the said swinging arm and having:

at its lower end an auxiliary device adapt ed 'coiiperate withthe, loo ,er thread controlling dev ce, with means or shifting the position offthe-vibrating part whereby the;

position of the; swinging arm 'ma ehangemand hereby the auxiliary evice thrownjinto position-so --that it engages or does not engage the loeper thread;

-. s ubstantially as described. g

j19.- In a -sewing machine take up device, altakefu "m'ember, a vibrating part,.'a pivotalstu therefor, means mounted on said- :stud 'to'rock said take upmemb'e'r and change its operative position.

i J 20. In a sewing mach e take up device,

"'az'take-up member, 'a vibrating'part, a pivot stud therefor, means mounted on said stud operative posit'on, said means being inanually controlled.

In a sewing machine take up dev1ce,

a take upmember, a vibrating part, a pivot therefor, means mounted on said stud }-to' rock said take-up member and change its operative position, sa d means being man- 22, In'a sewing j a take-up member,

i. my. moved v h operator' end including a a sliding finger piece. 7

machine take up device, a vibrating part, a pivot therefor, means mounted on said stud to rock said take-up member and change its .5

said means" being manuoperative position,

operator and mcluding a all moved by the "SH ing finger piece having means to'roek it and: swingthe take-up on'its pivot.

23. .In asewing machine take-,up dev ce,

a'r' means. for cona take-up member, a vibrating part, apivot 1stud therefor, means mounted on said stud to'rock said'take-up member and change its operative position, said means being manu- -'a slidin finger. piece, said sliding finger piece. '24. In a sewing machine,

and means to loot suitable stitch frame pivotedon a stationary; part of the and said rocking bed.

changed; substantially as descrl 26. Ina-sewing. machine take-up device threa s assing in separa'te pa s through the ma ine, an arm swinging vertically carrying a thread guide, an arm swinging horizontally carrying a thread guide, and means for swinging said arms and stationary thread guides cooperating with said moving thread fides and means for simultaneously; ad usting the operating position of said arms. v

27. In. a sewing machine for'inaking irregular stitches, stitch-forming devices including a plurality of stitch-forming members, constant tension. devices,

ried by the stitchormlng members, and means for simultaneously changing the opvary the appearance of the stitc In testimon in presenceo two wltnessesu RUsssL G. .wooDWAm);

, Witnesses:' I -J.- D. Srmm,

Gamma Bnsmissoxj,

ally-moved by the operator, and includin a c'ontroller for saidvib'rating member forreciprocating the same,

havin members tooperate ona plurality of.

forming mechanism, a take-up device, .lIl-

o ratin with sa1d'member, .a rocking mdchimyconnebtions between said take-up frame, whereby the vi-' brating position of said take-pp maybe and control- "lin devlces operatin upon. the threads.car-.

10o erative position of the controllin devices to whereof I afiix' my signature, I 

